Insecticide



eater entice.

MAX LEQNA TfiWER, 0F MIDDLEIPORT, NEW Y0, ASSIGNOR '1'0 NIAGARA 1".('30., OEDLWORT, NEW YORK, A. 00

ORATION or new YORK.

msncrrcrnn No Drawing.

To all whom it may concern:

Be it known that I, MAX L. TownR, a citizen of the United States, and aresident of Middleport, in the county of Niagara and State of New York,have invented anew and useful Insecticide, of which the followin is afull, clear, and exact description.

This invention relates to insecticides and has for an object to providean improved compound especially elficacious for. the destruction ofsucking insects, as for instance aphis pear psylla and red bug.

A further object is to provide an insecticide which may be a dustmixture for certain insects,'or may contain an ingredient which is astomach poison for chewing 1n sects.

In producing the compound the percentage of each ingredient may bevaried to quite a large extent so long as enough plaster of Paris isintroduced to combine with the Water of the nicotine solution.

Briefly the composition consists of a nicotine compound in the form of adust produced by mixing a strong nicotine solution with an inert powderor .filler and a dehydrating agent. Preferably the mass or base in whichto provide or suspend the nicotine compound consists of finely groundsulphur or sublimed sulphur because 1t has a decided fun icidal value.The dehydratingagent is pre erably plaster of Paris because of itscheapness and is a ready combination with the nicotine solution. Themass is made light and flufi'y large volume per unit weight by means ofa filler, which may be a number of difierent substances, as for instancewood flour, talc, tobacco dust, or other li ht flufi'y powder. Thetobacco dust is pregerable becauseit is very light and fluffy, and alsobecause it contalns a small percentage ofnicotine and this merely addsto the nicotine contents of the solution, which is de.-'

hydrated by means of the plaster of Paris. A forty per cent solution ofnicotine sulphate is preferable as a source of the nicotine contents ofthe mixture because of its high initial nicotine content, and becausethe sulphate of nicotine is more stable than the alkaloid or any'otherof its common salts.

Where the compound is to'be used in kill ing chewin insects, as forinstance the larva of the co 1 moth, a suitable internal poison isadde,:as for instance calcium ar senate.

' Specification of Letters Patent. Patenteqfl M y 16 192% Applicationfiled September 15, .1919. Serial No. 323,772. v i

The ingredients-as recited may have the proportions varied widely Whilepresenting an extremely fluify dusty mixture for the purpose deslred.

The following formulas are typical compoulds, though other proportionsmay be use solution.

In compoundin or mixing any particular batch above in lcated, or anyvariation thereof, the parts are intermingled and ground by an suitablemeans, as for instance by a ba 1 mill, first grinding together thesulphur, tobacco dust, laster of Paris and in formulas B and C, t earsenate, then adding the nicotine sul hate solution and finallygrinding the mixture a suflicient length of time to produce a fine, dry,dusty mass;

What I claim is:

1. An insecticidecomprising a nicotine salt solution, a dehydratlngagent, fine sulphur acting as a base in which the nicotine salts and thedehydrating agent are suspended and an arsenate.

2. An insecticide comprisin in substan-' tially the proportions given, aorty per cent nicotine sulphate solution, laster of Paris, tobacco dust,finely divide sulphur and an arsenate.

,3. An insecticide in the form of dust comprising a nicotine sulphatesolution, finely divided sulphur, plaster of Paris, sufiicient todehydrate the nicotine sulphate solution and lead arsenate.

4. An insecticide in the form of powder comprising a substantially fortyper cent 10 sulphur sixty seven and one half parts.

6. An insecticide in the form of dust comprising a nicotine sulphatesolution, finely divided sulphur, plaster of Paris sufficient todehydrate said solution, and an arsenate.

7. An insecticide in the form of dust comprising a substantially fortyper cent nicotine sulphate solution, a dehydrating agent suflicient todehydrate said solution, a metallic arsenate, tobacco dust and finelydivided sulphur.

MAX LEONARD TOWER.

